Fuel Line Mercedes W639 W906 OM646 Diesel Hose Injection System Pipe A6460781381

The Mercedes W639 OM646 Fuel Line Hose is an original part of the diesel fuel supply system, designed for OM646 diesel engines in the Mercedes W639 model. This used part from the Lines, Hoses, and Tubes category allows for an economical yet professional repair or restoration of the original fuel system configuration.

Specifications and technical data

• SKU: A6460781381
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6460781381
• Substitutable numbers: A6460781381, A 646 078 13 81, KD
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Application in Diesel Fuel Systems

The presented fuel line is designed to work with Diesel engines, meaning it is adapted for higher operating pressures and the specificities of diesel engine fuel supply. In such systems, stable fuel delivery between supply components is crucial, and a properly selected fuel hose minimizes the risk of leaks and pressure drops.

Using a line dedicated to the specific OM646 engine series in the W639 body ensures compliance with the factory routing of the lines, which facilitates installation and servicing, and reduces mechanical stress on the connections.

Benefits of Using an Original Fuel Line

Choosing an original fuel line for the Mercedes W639 with an OM646 engine is a solution that supports the proper functioning of the entire fuel supply system. The most important advantages of such a component include:

• maintaining the original routing of the line in the engine bay,
• proper fit for the connectors and mounting points in the specific model,
• compatibility with the operating parameters of the diesel system,
• reduced risk of incorrect installation compared to universal aftermarket parts.

Thanks to this, the fuel line helps maintain stable engine supply, which translates to smooth engine operation, proper response to load, and optimal conditions for the injection system.

Product Characteristics and Condition

The offered part comes from the Lines, Hoses, and Tubes group and is intended for Mercedes vehicles. The product is used, which allows for reduced repair costs while maintaining the original design specifications. This type of solution is particularly beneficial for vehicles used intensively, where both functionality and a rational service budget are important.

A used fuel line can be a good choice in situations where the existing part has suffered mechanical damage, wear and tear, or was disturbed during other service work in the engine bay.

Fuel Line Selection and Installation

To ensure the proper functioning of the fuel supply system, it is important to match the line to the specific engine and body version. In practice, this means paying attention to:

• compatibility with the OM646 engine in the Mercedes W639,
• fuel type – in this case, a diesel system,
• mounting system and line length in relation to the factory configuration.

Professional installation of the fuel line requires maintaining cleanliness at the connection points, proper hose routing, and leak testing after starting the engine. A correctly installed line supports safe and stable operation of the fuel system in daily use.

Other Mercedes Fuel Lines and Tuning Inspiration

If you are looking for other Mercedes Lines, Hoses, and Tubes for your vehicle, check out the Mercedes Lines, Hoses, and Tubes available in our assortment to select parts that match your specific model and engine configuration.

When planning more extensive work on your car – not just servicing, but also visual and ergonomic modifications – it's worth checking out the guide Car Interior Tuning with Global Parts, which shows how to use used equipment to refresh the cabin and improve driving comfort.